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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A309205 Denominators of coefficients of odd powers of x in expansion of f(x) = x cos (x cos (x cos( ... .

Table of values

n a(n)
1 1
2 2
3 24
4 720
5 8064
6 3628800
7 479001600
8 87178291200
9 2988969984000
10 6402373705728000
11 2432902008176640000
12 1124000727777607680000
13 47726800133326110720000
14 21225866375084507136000000
15 60977668922342772100300800000
16 265252859812191058636308480000000

List of values

[1, 2, 24, 720, 8064, 3628800, 479001600, 87178291200, 2988969984000, 6402373705728000, 2432902008176640000, 1124000727777607680000, 47726800133326110720000, 21225866375084507136000000, 60977668922342772100300800000, 265252859812191058636308480000000]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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